Plant ReproductionAims:•Illustrate the structure of the plant including the parts involved in reproduction.•Describe the different types of reproduction in plants.•Name and Explain 1 of the 5 stages of sexual reproduction in flowering plants.

Look at your flower what can you identify?

Think about the colour.Think about the shape.Think about the smell.

Reproduction: Is the ability of an organism to

produce an off-spring.

Gamete: This is a sex cell. In a plant the gametes are pollen (male) and egg (female)

2 Types of Reproduction: 

Sexual Reproduction: involves two parents.

 e.g. Egg and sperm in humans or Pollen

and an egg in plants.

Asexual Reproduction: involves only one parent.

e.g. Strawberry plants produce special stems called runners which grow from the base of the parent plant.

 

At a certain distance from the parent plant the runner forms new roots and a shoot. In this way new identical strawberry plants are produced from the original plant.

Advantage: young plants are identical to the parent, so that good features will always be passed on.

Disadvantage: All plants are the same so if a disease can kill 1 plant it can kill them all because they are identical.

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Functions of the flower partsSepals

Protect the flower when it’s a bud i.e. Before the petals open out and the flower blooms

PetalsThey protect the internal parts of the flower. Some are brightly coloured to attract insects.

CarpelThe carpel is the female part of the flower. It produces an egg cell which produces a female gamete. Some flowers have more than one carpel.The carpel is made up of three parts the stigma, the style and the ovary.

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StamenThe stamen is the male part of the flower. The stamen produces pollen grains which produce the male gamete. Most flowers have a large number of stamens.The stamen is made up of two parts the filament and the anther.

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StigmaThe stigma is were the pollen grains will land.

StyleThe style connects the stigma to the ovary.

OvaryThe ovary contains one or more ovules. They produce the egg. The egg produces a number of nuclei one of which is the female gamete.

The Carpel

Stamen (male part): produces pollen grains.

Filament: holds the anther in a suitable position.

Anther: produces pollen.

Pollen: produces the male gamete for fertilisation.

The nectary contains nectar for the bees and insects that collect it.

Structure of a planthttp://www.ngfl-cymru.org.uk/vtc/factors_plan

t_growth/eng/Introduction/InteractiveWhiteboardActivity.htm